[Change in the state of the fibrinolytic and kinin blood systems under physical load in the rehabilitation period after a myocardial infarct].

In examination of the blood fibrinolytic and kinin systems in patients with myocardial infarction in the period of rehabilitation three groups of patients were distinguished according to fibrinolysis activity: high, normal and diminished. A positive correlative connection was noted between the activity of the fibrinolytic system and that of the kinin system. The character of changes in the indices of these systems in response to physical load depended on their initial level. Maximum increase in the fibrinolysis activator level was noted in the group of patients with low initial fibrinolytic activity, whereas in the group of patients with high initial fibrinolysis its activity after the load decreased. In assessment of the functional condition of the organism it is necessary to take into account both the initial activity of the fibrinolytic and kinin systems and the character of changes in their activity in response to physical load.